Biology

Common Diseases * Health is regarded as a state of complete physical, mental and social well-being. * Infectious diseases are those that can e transmitted from one person to another. * Diseases can be caused y a variety of organisms such as bacteria or fungi. All diseasecausing organisms are called pathogens. * Some common pathogens ... Read more

Origin of Life * The origin of life is interlinked with the evolution of the earth, which is linked with the evolution of the universe. * The universe is vast and comprises many galaxies and is almost 20 billion years old. * The Big Bang Theory refers to a singular huge explosion which caused the ... Read more

Structure of DNA * Nucleic acids are made up of polynucleotide chains, which are formed by several nucleotides that make up the structure of the DNA when bonded together. * The length of DNA is defined by the number of nucleotides or pairs of nucleotides present in the DNA. * It was Friedrich Meischer who ... Read more

First and Second Laws of Inheritance * Gregor Johann Mendel carried out several hybridization experiments with true-breeding pea lines which had sharply contrasting characters. * A monohybrid cross is the study of inheritance of one pair of contrasting characters. * The Law of Dominance states that in a monohybrid, pure line cross between parents with ... Read more